A High Level Gamma Alarm for Criticality Monitoring
Du Pont de Nemours (E.I.) and Co., Aiken, SC (United States). Savannah River Lab., Louis H. Cook, US Atomic Energy Commission (AEC), England Le · 1964
A monitor was developed that detects the gamma radiation from a nuclear accident and gives visible and audible alarms when the radiation exceeds a predetermined level. The instrument also gives a failure alarm when certain common internal malfunctions occur. Auxiliary alarm contacts are available for use with external alarm systems. The instrument is battery powered and, consequently, is unaffected by short-term power outages. A charger maintains the alarm battery at full power.